public static byte[] RC2Decrypt(byte[] bytes, string IV, string Key)
{
byte[] byteKey = Encoding.ASCII.GetBytes(Key);
byte[] byteIV = Encoding.ASCII.GetBytes(IV);
MemoryStream MS = new MemoryStream();
RC2CryptoServiceProvider RC2 = new RC2CryptoServiceProvider();
CryptoStream CS = new CryptoStream(MS, RC2.CreateDecryptor(byteKey, byteIV), CryptoStreamMode.Write);
CS.Write(bytes, 0, bytes.Length);
CS.FlushFinalBlock();
return MS.ToArray();
}